Do Clipsal have a plate in the Metal Plate range that has a single 22mm hole in the middle of it.
No , this is not produced as a standard item, but volume dependant can be created as a special. Also being part of Schneider Electric we can also produce these made to order featuring the "Harmony" range of push buttons
please see following documentation for complete metal plate range. http://www.clipsal.com/Trade/search-results?q=bsl25a